Artificial slab



FIG. 1 is a perspective view of the artificial slab;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right-hand side view thereof;

FIG. 6 is a left-hand side view thereof; and,

FIG. 7 is a bottom view thereof.

The ornamental design for an artificial slab, as shown and described.